Re: [TLS] Consultation About Assignment of ExtensionTypes

Stephen Farrell <stephen.farrell@cs.tcd.ie> Fri, 19 June 2020 00:24 UTC

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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
To: Yoav Nir <ynir.ietf@gmail.com>, tls@ietf.org
References: <2F7403F6-C28A-4F5A-8128-A4B4609CA7C5@gmail.com>
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Date: Fri, 19 Jun 2020 01:24:05 +0100
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Subject: Re: [TLS] Consultation About Assignment of ExtensionTypes
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Hiya,

I think these are 16 bit code points?  If so, I would
barf slightly less if we could allocate 0x0bad every
time.

I do think signalling opprobrium somehow would be right
here. Not sure how best we ought do that though tbh.

Cheers,
S.

On 13/06/2020 18:20, Yoav Nir wrote:
> Hi.
> 
> I’m posting this on behalf of the IANA experts for the TLS
> registries. The IANA experts function is described in RFC  8447 [1].
> 
> We’ve received a request from ETSI to assign three ExtensionType
> values from the ExtensionType registry [2]. ETSI is the European
> Telecommunications Standards Institute [3]. Ordinarily requests from
> other standards organizations are approved as long as they’re not in
> conflict with current work within the IETF, and for the ExtensionType
> registry the policy is “Specification Required”.  The reason we are
> consulting this time is that we can foresee some objections should
> these assignments appear in the IANA registry.
> 
> So the request is for a part 2 of the Middlebox Security Protocol
> [4].  You can read it all, but the gist is a protocol between a TLS
> endpoint and a TLS middlebox that allows the middlebox read,
> read+delete, or read+delete+write access to the data stream. If this
> idea is giving you déjà vu, then yes, the TLS working group has
> considered proposals in that domain in the past, and to put in
> mildly, did not choose to take them up.
> 
> To re-iterate, the policy for the registry is “Specification
> Required” and a specification is available. Unless we hear convincing
> arguments to the contrary, we will approve this allocation. We just
> prefer to have the kerfuffle before the assignment rather than
> afterwards.
> 
> Thanks
> 
> Yoav (with the IANA expert hat on)
> 
> 
> [1] https://tools.ietf.org/html/rfc8447
> <https://tools.ietf.org/html/rfc8447> [2]
> https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#tls-extensiontype-values-1
> <https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#tls-extensiontype-values-1>
>
> 
[3] https://www.etsi.org/about <https://www.etsi.org/about>
> [4]
> https://docbox.etsi.org/CYBER/CYBER/Open/Latest_Drafts/CYBER-0027-2v020-TLMSP-Transport-Layer-Middlebox-Security-Protocol.pdf
> <https://docbox.etsi.org/CYBER/CYBER/Open/Latest_Drafts/CYBER-0027-2v020-TLMSP-Transport-Layer-Middlebox-Security-Protocol.pdf>
>
> 
> 
> 
> 
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